Okay, I know how well versed all of you are on final drives, so I'm gonna throw this one out.

I want to replace the 4.38 final drive in my RSX-S with a shorter one. The new Si, DC5-R and CTR all use a FD in the 4.7 range. I know the ITR and CTR FDs would probably bolt in, but I'd like to use the Si FD for cost reasons.

Considering the Civic and RSX both use the K20 motor, would the final drive in the Si 5sp bolt into the 6sp tranny in the RSX?

Thanks much!

 

Maybe, maybe not. All B-series trannies (to my knowledge) can fit the same size diff/final drive, but I have no experience with K-series trannies.. if both (edit: tranny housings) can fit it, then yes, you can swap it over, but there might be a countershaft difference, etc as well.


[Modified by Dominic Toretto, 2:06 PM 2/19/2002]

 

its highly doubtfula 5spd FD is gonna work on a 6pd tranny.. ive seen miracles but im gonna doubt that one..

let someone else be the guinea pig

 

There's no reason for it not to just because there's an extra gear on the countershaft/mainshaft. But you will need to swap more than just the FD.